CVE-2026-93081firmware: arm_scmi: Fix SCMI device destroy lifetimes
- —Not scoredno CVSS score yet
- 0.21%Exploitation in 30 daysEPSS · top 89% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Fix SCMI device destroy lifetimes scmi_child_dev_find() drops the reference returned by device_find_child() before returning the scmi_device pointer. A concurrent unregister can then release the device while the destroy path is still using the returned pointer. Make the lookup helper return the device_find_child() reference and keep it until scmi_device_destroy() has finished unregistering the child. Also split device_unregister() in __scmi_device_destroy() so the SCMI bus ID is not made reusable until after device_del() has removed the old scmi_dev.N name from sysfs. This avoids a new SCMI device reusing the same ID while the old device is still registered. The final device release callback is also a possible cleanup path when SCMI children are deleted by driver core recursion rather than __scmi_device_destroy(). Release the SCMI bus ID from a common helper used by destroy, register-failure and final-release paths, and clear scmi_dev->id after freeing it so the final release cannot free the same ID again.
Timeline
ID reserved
By Linux
Published
- 43 days later
· 43 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.21% · top 89% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected ff4273d47da81b95ed9396110bcbd1b7b7470fe8 – < afe5c022a180e0ade394d3fffbafc1a701f50993
- affected 2fbf6c9695ad9f05e7e5c166bf43fac7cb3276b3 – < d8ecdceeb90cd2c265b222a7b65487faf68fea73
- affected 969d8beaa2e374387bf9aa5602ef84fc50bb48d8 – < 916e27f71a80f6d77c48d1a1a5782d6d5ef9017c
- affected 9ca67840c0ddf3f39407339624cef824a4f27599 – < a60bc2df2d323cc1342f0cf95563cae266801e20
- affected 9ca67840c0ddf3f39407339624cef824a4f27599 – < c59b3393df1348a12308aaabd5fbc58ed6b21cf5
- affected 9ca67840c0ddf3f39407339624cef824a4f27599 – < 6abe8fe36b29ff51d1a42c2f338972883f4751a5
- affected 91ff1e9652fb9beb0174267d6bb38243dff211bb
- affected 8a8a3547d5c4960da053df49c75bf623827a25da
- affected 6.1.138 – < 6.1.191
- affected 6.6.90 – < 6.6.160
- affected 6.12.28 – < 6.12.114
- affected 5.15.182 – < 5.16
- affected 6.14.6 – < 6.15
- affected 6.15
- unaffected < 6.15
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.160 – ≤ 6.6.*
- unaffected 6.12.114 – ≤ 6.12.*
- unaffected 6.18.57 – ≤ 6.18.*
- unaffected 7.2.6 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References6
- https://git.kernel.org/stable/c/afe5c022a180e0ade394d3fffbafc1a701f50993 (opens in a new tab)
- https://git.kernel.org/stable/c/d8ecdceeb90cd2c265b222a7b65487faf68fea73 (opens in a new tab)
- https://git.kernel.org/stable/c/916e27f71a80f6d77c48d1a1a5782d6d5ef9017c (opens in a new tab)
- https://git.kernel.org/stable/c/a60bc2df2d323cc1342f0cf95563cae266801e20 (opens in a new tab)
- https://git.kernel.org/stable/c/c59b3393df1348a12308aaabd5fbc58ed6b21cf5 (opens in a new tab)
- https://git.kernel.org/stable/c/6abe8fe36b29ff51d1a42c2f338972883f4751a5 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-82191 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-93081)Record last updated .